modules/kernel.lua

@@ -1,6 +1,17 @@
-modules.kernel = {}
+local t = require("../utils/templater")
 
-add_packages({ "linux-virt" })
+modules.kernel = {
+	flavor = "virt",
+	mkinitfs = function(rootfs_path)
+		local status = os.execute(t("sudo sed -i 's/^esac/esac;comp=zstd/' '{{rootfs_path}}'/sbin/mkinitfs && sudo chroot '{{rootfs_path}}' mkinitfs -o /boot/initramfs-{{flavor}} $(cat '{{rootfs_path}}'/usr/share/kernel/'{{flavor}}'/kernel.release)", {
+			rootfs_path = rootfs_path,
+			flavor = modules.kernel.flavor,
+		}))
+		if not (status == 0) then return status end
+	end,
+}
+
+add_packages({ "linux-" .. modules.kernel.flavor, "zstd" })
 add_file("/etc/update-extlinux.conf", [[# configuration for extlinux config builder
 
 # Overwrite current /boot/extlinux.conf.
@@ -26,5 +37,7 @@ timeout=3
 default=lts
 ]])
 
-add_file("/etc/mkinitfs/mkinitfs.conf",
-	'features="squashfs ata base cdrom ext4 keymap kms mmc nvme scsi usb virtio"')
+add_file("/etc/mkinitfs/mkinitfs.conf", [[
+features="squashfs ata base cdrom ext4 keymap kms mmc nvme scsi usb virtio"
+disable_trigger=yes
+]])

setup.lua

@@ -51,6 +51,8 @@ module "nginx"
 
 print("=> Installing and upgrading packages...")
 utils.expect_nil(alpine.make_world(root, packages))
+print("=> Generating initramfs...")
+utils.expect_nil(modules.kernel.mkinitfs(root))
 print("=> Setting password...")
 utils.expect_nil(alpine.set_password(root, "root", "1"))
 print("=> Moving boot...")